Pipe joint and pipe assembly
By designing pipe joints with multiple plane walls and connecting them to the outside of the pipeline through laser welding, the problems of insufficient connection strength and leakage of pipe joints in the prior art are solved, and higher connection strength and sealing performance are achieved.
Patent Information
- Application Number
- CN202420488336.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-13
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-03-13
AI Technical Summary
In the prior art, the connection strength between the pipe joints and the pipeline is low, and leakage is prone to occur. In the vehicle, due to space limitations and the presence of high-pressure fluid, the prior art is difficult to meet the requirements of higher connection strength and sealing performance.
A pipe joint is designed, and its first end includes a side wall for sleeved on the outside of the pipeline and connected to the outside of the pipeline by laser welding. The side wall is composed of a plurality of planar walls, which can be polygonal in the cross-section to enhance the connection strength.
The pipe joints connected by laser welding can withstand large liquid pressure, which improves the connection strength and sealing performance between the pipe joints and the pipeline, and solves the problems of insufficient connection strength and leakage in the prior art.
Smart Images
Figure CN222634092U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of fluid pipelines, and more specifically, to a pipe joint and a pipe assembly having the pipe joint. Background Art
[0002] In a vehicle, pipelines for various fluids, such as coolant pipelines, are provided. The pipeline and the pipe joint are generally connected to the pipeline by inserting the pipe joint into the pipeline with an interference fit. Such a connection method has low connection strength, low burst pressure, and is prone to leakage. In addition, in some cases, a clamp on the outside of the pipe joint is used to connect the pipe joint to the pipeline. These clamps often occupy a large space, have a large requirement for the internal layout space of the vehicle, and increase the number of parts, weight, and cost.
[0003] For the pipe joints of the battery cooling pipelines of the vehicle, the arrangement space thereof is limited and the liquid in the pipelines may have a relatively high pressure, which places higher requirements on the connection strength between the pipe joints and the pipelines. Utility Model Content
[0004] The purpose of this application is to solve or at least alleviate the problems existing in the prior art.
[0005] On the one hand, a pipe joint is provided, which includes a first end connected to a pipeline and a second end opposite to the first end, the first end of the pipe joint includes a side wall, wherein the side wall is used to be sleeved on the outside of the pipeline and connected to the outside of the pipeline by laser welding, and the side wall includes at least one plane wall.
[0006] Optionally, in the embodiment of the pipe joint, the side wall is composed of a plurality of planar walls.
[0007] Optionally, in the embodiment of the pipe joint, the side wall is polygonal in cross section.
[0008] Optionally, in the embodiment of the pipe joint, the side wall is triangular, square, rectangular, pentagonal or hexagonal in cross section.
[0009] Optionally, in the embodiment of the pipe joint, there are chamfers between the plane walls of the side walls.
[0010] Optionally, in the embodiment of the pipe joint, the side wall is a concave polygon in cross section.
[0011] Optionally, in an embodiment of the pipe joint, the first end of the pipe joint is laser-penetrable, wherein the laser transmittance of the first end of the pipe joint is greater than 10%.
[0012] Optionally, in an embodiment of the pipe joint, the second end of the pipe joint is configured as a joint for connecting to other components, wherein the second end of the pipe joint has an internal thread or an external thread, or the second end of the pipe joint is a bayonet joint, a pagoda joint, an inverted cone joint, a column joint, a boss joint, a flange joint or a quick joint.
[0013] According to another aspect, there is also provided a pipe assembly, the pipe assembly comprising:
[0014] Pipes; and
[0015] A pipe joint according to various embodiments;
[0016] The end of the pipeline is formed to correspond to the shape of the first end of the pipe joint, and the first end of the pipe joint is sleeved on the outside of the end of the pipeline and connected to the outside of the end of the pipeline by laser welding.
[0017] Optionally, in an embodiment of the pipe assembly, there is at least one annular weld between the first end of the pipe joint and the end of the pipeline, and the laser transmittance of the first end of the pipe joint is greater than the laser transmittance of the end of the pipeline.
[0018] Optionally, the pipe joint and the end of the pipeline are both flat, and the end of the pipeline includes a plurality of sub-flow paths.
[0019] The pipe joint and the pipe assembly according to the utility model can withstand greater liquid pressure. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The disclosure of the present application will become more easily understood with reference to the accompanying drawings. It is easy for those skilled in the art to understand that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present application. In addition, similar numbers in the drawings are used to represent similar components, among which:
[0021] Figure 1 shows a perspective view of a pipe joint according to an embodiment;
[0022] Figure 2 shows a perspective view of a tube assembly according to an embodiment;
[0023] Figure 3 and Figure 4 A cross-sectional view and an end view of the pipe joint and the pipe connection portion are shown respectively;
[0024] Figure 5(a) to Figure 5(g) shows the cross-sectional shape of the first end of an alternative pipe fitting; and
[0025] Figure 6 and Figure 7A side view and a cross-sectional view of a tube assembly according to another alternative embodiment are shown. DETAILED DESCRIPTION
[0026] refer to Figures 1 to 4 Let's introduce the pipe joint and pipe assembly according to the embodiment of the utility model. The pipe joint 1 according to the embodiment of the utility model includes a first end 11 and a second end 12 relative to each other, wherein the first end 11 of the pipe joint is used to connect with the pipeline 2, and the pipeline 2 is, for example, a plastic pipeline, which is used to guide fluids, such as coolants and other fluids. Only the end of the pipeline 2 is shown in the figure. In fact, the pipeline 2 can have any desired length. The end of the pipeline 2 can be formed into a shape corresponding to the first end 11 of the pipe joint, for example, by hot pressing, and the main part of the pipeline 2 can have a common round tube shape. The second end 12 of the pipe joint is used to connect with other components, such as battery cooling pipelines, pumps, heat exchangers, compressors or other pipelines, etc.
[0027] like Figure 1 As shown, the first end 11 of the pipe joint includes a side wall, wherein the side wall is used to be sleeved on the outside of the pipeline 2 and connected to the outside of the pipeline 2 by laser welding, and the side wall includes at least one plane wall 141, 142, 143, 144. The weld between the first end 11 of the pipe joint and the pipeline 2 passes through the at least one plane wall. Laser welding the plane wall with the pipeline 2 enables the connection between the pipe joint and the pipeline 2 to withstand a greater fluid pressure, for example, it can withstand a fluid pressure of 30MPa or more in the pipeline. In addition, the assembly between the pipe joint and the pipeline can be facilitated by at least one plane wall, the design is simplified, and the limited space conditions on the vehicle can also be adapted. In addition, the pipe joint and the pipeline combined by plane wall welding have a stronger connection strength, bursting pressure and more reliable sealing performance.
[0028] In the present invention, the pipe joint is made of polymer and can be laser welded on the outside of the pipe 2. This structure allows connection to be made on the outside of the pipe 2, while the pipe joint is traditionally connected to the inside of the pipe 2. Therefore, this structure provides greater freedom in the design of the pipe and the pipe joint, for example, not only allowing one or more plane walls to overcome the problems of the prior art described above, but also adapting to more complex structures, such as various cross-sectional shapes of the pipe joint 1 and the pipe 2 as will be described in detail below. In addition, this also allows various structural designs to be made inside the pipe 2.
[0029] exist Figure 1In the embodiment shown, the side wall of the first end 11 of the pipe joint is composed of four plane walls 141, 142, 143, 144, and in the cross section, the four plane walls 141, 142, 143, 144 form a square and form a square cavity therebetween, and the pipe 2 is inserted into the cavity. Therefore, in some embodiments, the side wall may be composed of a plurality of plane walls. The first end 11 of the pipe joint 1 has a port 140 for inserting the pipe 2 into the cavity defined by the plane walls.
[0030] In some embodiments, the second end 12 of the pipe joint is configured as a joint for connecting to other components. For example, in the illustrated embodiment, the second end 12 of the pipe joint is configured as a pagoda joint. In alternative embodiments, the second end 12 of the pipe joint can be configured as any type of joint. For example, the second end 12 of the pipe joint can have an internal thread or an external thread, or the second end of the pipe joint is a bayonet joint, an inverted cone joint, a boss joint, a boss joint, a flange joint or a quick joint. In the illustrated embodiment, the first end 11 and the second end of the pipe joint are along the same axis. In an alternative embodiment, the second end 12 of the pipe joint can be configured to be at an angle to the first end 11, for example, at a right angle. In some embodiments, a flange 13 can be provided between the first end 11 and the second end 12 of the pipe joint for transition or for installing the pipe joint 1.
[0031] like Figure 3As shown, there is at least one circumferential weld 19 at the contact surface between the first end 11 of the pipe joint and the pipeline 2, and the weld extends along the inner periphery of the side wall of the first end 11 of the pipe joint and the outer periphery of the pipeline 2. In the illustrated embodiment, the circumferential weld 19 is substantially square, and when the shape of the first end 11 of the pipe joint changes, the shape of the weld 19 will also change accordingly. In some embodiments, two or more welds 19 may be provided. In some embodiments, the first end 11 of the pipe joint 1 is relatively laser-transmissive. In some embodiments, the laser transmittance of the first end 11 of the pipe joint 1 is greater than 10%, such as greater than 20%, or, for example, greater than 30%. In some embodiments, the pipeline 2 is laser-absorbent. In some embodiments, the laser transmittance of the first end 11 of the pipe joint 1 is greater than the laser transmittance of the pipeline 2. With this arrangement, the laser can pass through the first end 11 of the pipe joint 1 and reach the joint surface, and melt and fuse the materials of the pipe joint 1 and the pipeline 2 at the joint surface to form a joint or weld 19. In some embodiments, the pipe joint 1 and the pipeline 2 can be laser welded after preliminary assembly. In some embodiments, the second end 12 of the pipe joint 1 has a larger size than the first end 11 of the pipe joint. In some embodiments, the laser can be fixed and the pipe assembly can be rotated to achieve an annular weld. In some embodiments, the annular weld can be in the same axial position. In some embodiments, the annular weld can be in different axial positions. In an alternative embodiment, the pipe assembly can be fixed so that the laser spot travels along the outside of the pipe assembly. In some embodiments, the pipe joint 1 and the pipeline 2 are both made of plastic material, for example, by injection molding into one piece. The materials of the pipe joint 1 and the pipeline 2 can be selected from the following materials: the pipe joint 1 material includes but is not limited to PPA, PPS, PVDF, PEEK, PPSU, PSU, PESU, PFA, PARA, PA, HPPA. The pipeline 2 material includes but is not limited to PPA, PPS, PVDF, PEEK, PPSU, PSU, PESU, PFA, PARA, PA, HPPA.
[0032] Continue to refer Figure 5(a) to Figure 5(g)To introduce the cross-sectional shape of the side wall of the first end of the pipe joint according to an alternative embodiment. In some embodiments, the side wall is polygonal in cross section, such as a regular polygon. In some embodiments, the side wall is triangular, square, rectangular, pentagonal or hexagonal in cross section, for example, as shown in FIG. 5(b), the side wall is an equilateral triangle 113 in cross section, or as shown in FIG. 5(c), the side wall is a regular pentagon 115 in cross section, or as shown in FIG. 5(d), the side wall is a regular hexagon 116 in cross section. In some embodiments, as shown in FIG. 5(a), there are chamfers between the plane walls of the side wall for easy demoulding. In some embodiments, the side wall may be a convex polygon in cross section. In some embodiments, the side wall may be a concave polygon in cross section, such as a C-shaped as shown in FIG. 5(e) and an I-shaped as shown in FIG. 5(f). In some embodiments, the side wall may include a plane wall and an arcuate wall in cross section, for example, as shown in FIG. 5(g), the side wall is a racetrack in cross section, including opposite plane walls 115, 116 and an arcuate wall between them.
[0033] In addition, the utility model also provides a pipe assembly, which includes: a pipeline and a pipe joint; the end of the pipeline is formed to correspond to the shape of the first end of the pipe joint, the first end of the pipe joint is sleeved on the outside of the end of the pipeline, and is connected to the outside of the end of the pipeline by laser welding.
[0034] Continue to refer Figure 6 and Figure 7 , which shows a pipe assembly according to an embodiment of the utility model. In this embodiment, the first end 11′ of the pipe joint is rectangular in cross section, for example, in some embodiments, the first end 11′ of the pipe joint has a flat shape in cross section, for example, the aspect ratio in the cross section is greater than 3. In this embodiment, the second end 12 of the pipe joint is at an angle to the first end 11′, for example, perpendicular to each other. In addition, the pipeline 2′ has a corresponding rectangular cross section, and a plurality of sub-flow paths 201 are formed inside the pipeline 2′, and the plurality of sub-flow paths 201 can be in a row, and the fluid flowing out of the plurality of sub-flow paths 201 converges in the pipe joint and flows out from the second end 12′ of the pipe joint.
[0035] The specific embodiments described above in this application are only for more clearly describing the principle of this application, wherein each component is clearly shown or described to make the principle of this utility model easier to understand. Without departing from the scope of this application, those skilled in the art can easily make various modifications or changes to this application. Therefore, it should be understood that these modifications or changes should be included in the scope of patent protection of this application.
Claims
1. A pipe joint, comprising a first end connected to a pipeline and a second end opposite to the first end, wherein the first end of the pipe joint comprises a side wall, characterized in that: The side wall is used to be sleeved on the outside of the pipeline and connected to the outside of the pipeline by laser welding. The side wall includes at least one plane wall.
2. The pipe joint according to claim 1, characterized in that: The side wall is composed of a plurality of planar walls.
3. The pipe joint according to claim 2, characterized in that: The side wall is polygonal in cross section.
4. The pipe joint according to claim 2, characterized in that: The side wall is triangular, square, rectangular, pentagonal or hexagonal in cross section.
5. The pipe joint according to claim 4, characterized in that: The side walls have chamfers between the planar walls.
6. The pipe joint according to claim 2, characterized in that: The side wall is in the shape of a concave polygon in cross section.
7. The pipe joint according to any one of claims 1 to 6, characterized in that: The first end of the pipe joint is laser-penetrable, wherein the laser transmittance of the first end of the pipe joint is greater than 10%.
8. The pipe joint according to any one of claims 1 to 6, characterized in that: The second end of the pipe joint is configured as a joint for connecting to other components, wherein the second end of the pipe joint has an internal thread or an external thread, or the second end of the pipe joint is a bayonet joint, a pagoda joint, an inverted cone joint, a boss joint, a boss joint or a flange joint.
9. A pipe assembly, characterized in that: The tube assembly comprises: Pipes; and The pipe joint according to any one of claims 1 to 8; The end of the pipeline is formed to correspond to the shape of the first end of the pipe joint, and the first end of the pipe joint is sleeved on the outside of the end of the pipeline and connected to the outside of the end of the pipeline by laser welding.
10. The pipe assembly according to claim 9, characterized in that There is at least one annular weld between the first end of the pipe joint and the end of the pipeline, the laser transmittance of the first end of the pipe joint is greater than the laser transmittance of the end of the pipeline, the ends of the pipe joint and the pipeline are both flat, and the end of the pipeline includes multiple sub-flow paths.